1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ainat [17]
2 years ago
12

Help please...............

Mathematics
2 answers:
frozen [14]2 years ago
4 0

Answer:

Sam made a mistake, and their correct value is 30.

Step-by-step explanation:

Alisiya [41]2 years ago
3 0

Answer:

Value 30

Step-by-step explanation:

just did it

You might be interested in
Please help me *30 points*
sasho [114]

Answer:

number 1 is         -1.5

number 2 is       -2 1/6

Step-by-step explanation

7 0
3 years ago
Read 2 more answers
Stanley is dividing 5 cookies so he can eat little pieces throughout the day. He wants to divide each cookie into 's. How many p
Temka [501]
4 pieces * 5 cookies = 25
5 0
3 years ago
List all the ways to select two members from S with repetition. The order in which the members are selected is not important. Fo
Taya2010 [7]

9514 1404 393

Answer:

  KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP

Step-by-step explanation:

Instead of starting with adjacent letters in the list, we start with the same letter. There are 15 possible pairs.

  KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP

__

<em>Additional comment</em>

We leave out pairs with letters previous, because you've said KL is the same as LK, and KL has already been listed. The problem with this list is that it misstates the probabilities of randomly obtaining a given pair. It is not 1/15, but is 2/25 for all but letter duplicates. For duplicates (KK), the probability is 1/25, not 1/15.

4 0
3 years ago
Big babies: The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighe
Vedmedyk [2.9K]

Answer:

Yes. The data provide enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

P-value=P(t>2.84)=0.0024

Step-by-step explanation:

Hypothesis test on the population mean.

The claim is that the mean weight of one-year-old boys is greater than 25 pounds.

Then, the null and alternative hypothesis are:

H_0: \mu=25\\\\H_a:\mu>25

The significance level is α=0.05.

The sample size is n=354. The sample mean is 25.8 pounds and the sample standard deviation is 5.3 pounds. As the population standard deviation is estimated from the sample standard deviation, we will use a t-statistic.

The degrees of freedom are:

df=n-1=354-1=353

The t-statistic is:

t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{25.8-25}{5.3/\sqrt{354}}=\dfrac{0.8}{0.2817}=2.84

For a right tailed test and 353 degrees of freedom, the P-value is:

P-value=P(t>2.84)=0.0024

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

There is enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

7 0
2 years ago
The vertices of ΔABC are A(2, -5), B (-3, 5), and C (3, -3). The triangle is reflected over the x-axis. Use arrow notation to de
Artyom0805 [142]
Reflected over the x-axis: A'(2,-5),B'(-3,-5),C'(3,3)<span>. Hence, the original triangle is described by A'B'C'.</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Need help on number 10!!
    9·2 answers
  • In a random sample of 97 women at a company, the mean salary is $45,902 with a standard deviation of $3865. In a random sample o
    13·1 answer
  • How many yards are in 7 3/5 feet?
    5·1 answer
  • The following is the list of MAD statistics for each of the models you have estimated from time-series data:
    14·2 answers
  • 8.7+w=5.1 <br> help me plz
    11·2 answers
  • I need a answer for number 7
    11·1 answer
  • Which expression is equivalent to 13 - (-21)?
    13·1 answer
  • Given the following trapezoid, if QR=8 and UT=12, find the length of the midsegment VS?
    11·1 answer
  • 4. In the spinner below, the pointer stopped on the blank region. What color should the blank region be so
    15·1 answer
  • Carla has a pair of blue jeans and a pair of black jeans. She has 3 sweaters (blue, white and tan.) She also has 3 pairs of shoe
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!